Here in Florida, metal framming members are required to be bonded to the electrical system.
2704.1 Bonding metal framing members.
Metal framing members. Metal framing members shall be bonded to the equipment grounding conductor for the circuit that may energize the framing and be sized in accordance with the National Electric Code , Table 250.122 . For the purpose of this section, a grounded metal outlet box attached to the framing shall be permitted.
